Hi Jim,
I am just writing to see how everything is going. If you have any updates
or need any further assistance on this issue, please feel free to let me
know.
Thanks & Regards,
Ken Zhao
Microsoft Online Support
Microsoft Global Technical Support Center
Get Secure! -
www.microsoft.com/security <http://www.microsoft.com/security>
====================================================
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
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--------------------
| X-Tomcat-ID: 45095161
| References: <OZrLeuavHHA.3556@TK2MSFTNGP02.phx.gbl>
| MIME-Version: 1.0
| Content-Type: text/plain
| Content-Transfer-Encoding: 7bit
| From:
v-kzhao@online.microsoft.com ("Ken Zhao [MSFT]")
| Organization: Microsoft
| Date: Wed, 04 Jul 2007 04:06:15 GMT
| Subject: RE: Unexplained delays access files in windows share from
explorer
| X-Tomcat-NG: microsoft.public.windows.server.general
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| NNTP-Posting-Host: tomcatimport2.phx.gbl 10.201.218.182
|
| Hello Jim,
|
| Thank you for using newsgroup!
|
| Based on my knowledge, Windows Server 2003 SP2 introduces a number of new
| networking features, including TCP Chimney Offload, Receive Side Scaling
| (RSS), and Network Direct Memory Access (NetDMA). Unfortunately, RSS and
| TCP Chimney Offload are not compatible with these technologies:
|
| o Windows Firewall
| o Internet Protocol security (IPsec)
| o Internet Protocol Network Address Translation (IPNAT)
| o Third-party firewalls
| o NDIS 5.1 intermediate drivers
|
| The critical question in determining which steps to use is "how many NICs
| are in the box?". If you have a multi-homed box (more than 1 NIC), use
all
| four steps below. If you have a single NIC server, our recommendation is
to
| follow the steps below in order and see if each step provides resolution.
| RSS can provide significant performance enhancements if your network
| hardware supports it end-to-end. Our general recommendation is to update
| your NIC driver in 100% of cases.
|
| Step 1: Update the Driver
| Most of the issues we've seen are related to older NIC drivers that do
not
| know how to use the advanced networking features ( of Windows Server 2003
| SP2. Virtually every major manufacturer has come out with a new driver in
| '07. Before you do anything else, make sure that you have the latest
| Server 2003 drivers for you NIC. The vast majority of the cases we've
seen
| can be solved by this step alone.
|
| Step 2: Disable Offloading on the Advanced Properties of the NIC
| Most NICs have various offloading functions that can increase network
| performance (or at least lower CPU usage on the server). Again, this is
| only if your network hardware supports high throughput end-to-end. That
| means that your NICs, cabling, switches, and possibly routers all have to
| support gigabit networking and know how to deal with these offloading
| functions. Your vendor(s) have the final say on wether RSS, checksum
| offloading, etc. will work with the combination of equipment you have.
| That's a nice way of saying that your typical "lean and mean" small
| business is not likely to have invested in high-end hardware. In
support,
| we routinely turn these functions off when troubleshooting any networking
| issues. We've never seen a case in an SBS environment where there was
| perceived network slowness after disabling offload functions. If in
doubt,
| disable all advanced features, test to see if they provide relief, and
then
| re-enable them one by one to see if A) these features cause your
networking
| issue and B) if they offer any kind of performance gain. Here are a few
| examples (your vendor will likely have different settings based on model
| and driver revision)
|
| Step 3: Disable RSS in the Registry
| Use the steps in KB 927695 to disable Receive Side Scaling (RSS) by
adding
| a DWORD registry key value for
|
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Enable
| RSS and setting it to 0. A reboot is required to make the value go in to
| effect.
|
| Step 4: Set DisableTaskOffload in the Registry
| Use the steps in KB 904946 to create a DWORD value for
|
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Disabl
| eTaskOffload and set it to 1. A reboot is required to make this value go
| in to effect.
|
| Thanks & Regards,
|
| Ken Zhao
|
| Microsoft Online Support
| Microsoft Global Technical Support Center
|
| Get Secure! -
www.microsoft.com/security
<http://www.microsoft.com/security>
| ====================================================
| When responding to posts, please "Reply to Group" via your newsreader so
| that others may learn and benefit from your issue.
| ====================================================
| This posting is provided "AS IS" with no warranties, and confers no
rights.
|
|
|
|
|
| --------------------
| | Date: Tue, 03 Jul 2007 15:51:56 -0400
| | From: Jim Helfer <JimHelfer@newsgroup.nospam>
| | User-Agent: Thunderbird 2.0.0.4 (Windows/20070604)
| | MIME-Version: 1.0
| | Subject: Unexplained delays access files in windows share from explorer
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| | X-Tomcat-NG: microsoft.public.windows.server.general
| |
| |
| | I am using Windows XPsp2 PCs to access a few windows shares on a
| | Windows 2003SP2 server. Over a 100Mbit or Gigabit connection. (I am
| | transitioning from 100 to 1Gig switches. This problem has stayed
| | constant no matter the speed of the network.)
| |
| | Sometimes when you log in and open Windows Explorer, the share will
| | not appear until after a delay of a few minutes.
| |
| | Sometimes when you open the share from Explorer, there will be a
delay
| | (arrow-hourglass and blank right side pane). of usually 10-15
seconds,
| | sometimes as long as 30-45 seconds before the files are displayed.
After
| | that, the performance accessing files seems normal.
| |
| | Sometimes however, the share will open normally, but one of the
| | subfolders will delay when opening.
| |
| | If access a folder on a share and later revisit that folder after a
| | period of activity, you may experience a delay again.
| |
| | The server has 4 Gig ram, and runs a SQL server and DHCP. It is not a
| | DC. Their are two additional servers the are DC/DNS servers. The
patces
| | and drivers are up to date.
| |
| | One share is only accessed infrequently by a few people, and contains
| | a good deal of files, some quite large.
| | The other share is access nearly daily by the entire staff, but only
| | to run timesheet software. So, the access is breif, and the amoutn of
| | data transfered is small.
| |
| | Our File and Print are on Netware, so all machines run NWClient
| | 4.91sp3, but the windows file sharing is given a higher priority than
| | Netware client.
| |
| | I think these delays are starting to affect some other server
| | operations (such as pushing out newer versions).
| |
| | Any ideas on where to look would be apreciated.
| |
| |
| | --
| | Jim Helfer
| | Computer Systems Administrator
| | WTW Architects
| | Timber Court
| | 127 Andesron St.
| | Pittsburgh PA 15212
| | 412-321-0551 x330
| |
jhelfer@wtwarch.com
| |
|
|